Metasurface antenna
An antenna is provided including an electromagnetic metasurface. The electromagnetic characteristics of the antenna are dynamically tunable.
1. An antenna comprising:
an electromagnetic metasurface array comprising a plurality of metasurface unit cells,
wherein electromagnetic characteristics of the antenna are dynamically tunable by adjusting a bias applied to a tunable dielectric of one or more of the metasurface unit cells;
wherein the metasurface unit cells comprise:
a dielectric spacer comprising a first side and a second side;
a patterned metal layer disposed on the first side of the dielectric spacer;
a ground plane disposed on the second side of the dielectric spacer; and
one or more tunable elements disposed in gaps of a metasurface formed by the patterned metal layer.
2. The antenna of claim 1 , wherein the metasurface unit cells further comprise a plurality of vias electrically connecting the patterned metal layer and the ground plane.
3. The antenna of claim 1 , wherein the dielectric spacer comprises a magnetodielectric composite.
4. The antenna of claim 3 , wherein the magnetodielectric composite comprises a magnetodielectric nanomaterial.
5. The antenna of claim 1 , wherein the one or more tunable elements are further disposed between the dielectric spacer and the patterned metal layer.
6. The antenna of claim 1 , wherein the antenna is conformal to an application surface.
7. The antenna of claim 1 , wherein dynamically tuning the electromagnetic characteristics of the antenna comprises beam steering.
8. The antenna of claim 7 , wherein the non-Foster circuit is configured to provide active control of a bandwidth of the antenna.
9. The antenna of claim 1 , wherein dynamically tuning the electromagnetic characteristics of the antenna comprises dynamically tuning the frequency, amplitude, or phase of incident electromagnetic radiation.
10. The antenna of claim 1 , wherein the antenna comprises a non-Foster circuit.
11. A system comprising:
an electromagnetic metasurface comprising a plurality of metasurface unit cells, wherein electromagnetic characteristics of the electromagnetic metasurface are dynamically tunable; and
processing circuitry configured to dynamically tune the electromagnetic metasurface by adjusting a bias applied to a tunable dielectric of one or more of the metasurface unit cells
wherein the metasurface unit cells comprise:
a dielectric spacer comprising a first side and a second side;
a patterned metal layer disposed on the first side of the dielectric spacer;
a ground plane disposed on the second side of the dielectric spacer; and
one or more tunable elements disposed in gaps of the electromagnetic metasurface formed by the patterned metal layer.
12. The system of claim 11 , wherein the metasurface unit cells further comprise a plurality of vias electrically connecting the patterned metal layer and the ground plane.
13. The system of claim 11 , wherein the dielectric spacer comprises a magnetodielectric composite.
14. The system of claim 13 , wherein the magnetodielectric composite comprises a magnetodielectric nanomaterial.
15. The system of claim 11 , wherein the one or more tunable elements are further disposed between the dielectric spacer and the patterned metal layer.
16. The system of claim 11 , wherein the antenna is conformal to an application surface.
17. The system of claim 11 , wherein dynamically tuning the electromagnetic characteristics of the antenna comprises beam steering.
18. The system of claim 11 , wherein dynamically tuning the electromagnetic characteristics of the antenna comprises dynamically tuning the frequency, amplitude, or phase of incident electromagnetic radiation.